scope:

This Japanese Industrial Standard specifies requirements for the external extruded polyethylene coated steel pipes (hereafter referred to as coated steel pipes) mainly used for underground services (including the bottom of river, the bottom of sea and common ditch) of transporting gas, oil, water, etc. and protecting cables.

NOTE 1 This Standard is applicable to pipes of outside diameter 21.7 mm (nominal diameter 15A or 1/2B) to 812.8 mm (nominal diameter 800A or 32B) (see Table 2).

NOTE 2 The coated steel pipes are usually used at temperatures in the range of -20 °C to +40 °C.